Pencil sharpener



FIG. 1 is a perspective view of a pencil sharpener showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a first end view thereof;

FIG. 4 is a second end view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The structure depicted by means of broken lines in the drawing figures has been shown for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for the pencil sharpener, as shown and described. 